US6414562B1 - Circuit and method for impedance matching - Google Patents
Circuit and method for impedance matching Download PDFInfo
- Publication number
- US6414562B1 US6414562B1 US08/863,153 US86315397A US6414562B1 US 6414562 B1 US6414562 B1 US 6414562B1 US 86315397 A US86315397 A US 86315397A US 6414562 B1 US6414562 B1 US 6414562B1
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- 238000000034 method Methods 0.000 title description 6
- 239000003990 capacitor Substances 0.000 claims description 112
- 238000001514 detection method Methods 0.000 claims description 38
- 238000005070 sampling Methods 0.000 claims description 30
- 230000002457 bidirectional effect Effects 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 9
- 230000004044 response Effects 0.000 claims description 2
- 239000004020 conductor Substances 0.000 description 10
- 238000002955 isolation Methods 0.000 description 7
- 230000001939 inductive effect Effects 0.000 description 6
- 230000003321 amplification Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 238000006842 Henry reaction Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/38—Impedance-matching networks
- H03H7/40—Automatic matching of load impedance to source impedance
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0458—Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages
Abstract
Description
Claims (15)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/863,153 US6414562B1 (en) | 1997-05-27 | 1997-05-27 | Circuit and method for impedance matching |
US10/117,621 US20020145483A1 (en) | 1997-05-27 | 2002-04-05 | Circuit and method for impedance matching |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/863,153 US6414562B1 (en) | 1997-05-27 | 1997-05-27 | Circuit and method for impedance matching |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/117,621 Division US20020145483A1 (en) | 1997-05-27 | 2002-04-05 | Circuit and method for impedance matching |
Publications (1)
Publication Number | Publication Date |
---|---|
US6414562B1 true US6414562B1 (en) | 2002-07-02 |
Family
ID=25340401
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/863,153 Expired - Lifetime US6414562B1 (en) | 1997-05-27 | 1997-05-27 | Circuit and method for impedance matching |
US10/117,621 Abandoned US20020145483A1 (en) | 1997-05-27 | 2002-04-05 | Circuit and method for impedance matching |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/117,621 Abandoned US20020145483A1 (en) | 1997-05-27 | 2002-04-05 | Circuit and method for impedance matching |
Country Status (1)
Country | Link |
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US (2) | US6414562B1 (en) |
Cited By (79)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030092388A1 (en) * | 2001-11-14 | 2003-05-15 | Koninklijke Philips Electronics N.V. | Impedeance matching circuit for a multi-band radio frequency device |
WO2004010595A1 (en) * | 2002-07-20 | 2004-01-29 | Philips Intellectual Property & Standards Gmbh | Device for dynamic impedance matching between a power amplifier and an antenna |
US6741140B2 (en) * | 2001-12-12 | 2004-05-25 | Nortel Networks Limited | Circuit for receiving an AC coupled broadband signal |
US20040251983A1 (en) * | 2003-06-10 | 2004-12-16 | International Business Machines Corporation | Programmable impedance matching circuit and method |
US20050056369A1 (en) * | 2003-09-11 | 2005-03-17 | Chien-Hsin Lai | Plasma apparatus and method capable of adaptive impedance matching |
EP1564896A1 (en) * | 2004-02-10 | 2005-08-17 | Sony Ericsson Mobile Communications AB | Impedance matching for an antenna |
US20060160501A1 (en) * | 2000-07-20 | 2006-07-20 | Greg Mendolia | Tunable microwave devices with auto-adjusting matching circuit |
US20070035356A1 (en) * | 2005-08-15 | 2007-02-15 | Nokia Corporation | Integrated load impedance sensing for tunable matching networks |
US20070197180A1 (en) * | 2006-01-14 | 2007-08-23 | Mckinzie William E Iii | Adaptive impedance matching module (AIMM) control architectures |
US20070232249A1 (en) * | 2006-04-04 | 2007-10-04 | Samsung Electronics Co., Ltd. | Impedance matching system, network analyzer having the same, and impedance matching method thereof |
US20070285326A1 (en) * | 2006-01-14 | 2007-12-13 | Mckinzie William E | Adaptively tunable antennas incorporating an external probe to monitor radiated power |
WO2008007330A2 (en) * | 2006-07-12 | 2008-01-17 | Nxp B.V. | Load-line adaptation |
US20080106349A1 (en) * | 2006-11-08 | 2008-05-08 | Mckinzie William E | Adaptive impedance matching apparatus, system and method |
JP2008516508A (en) * | 2004-10-06 | 2008-05-15 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Impedance detector |
US20080136714A1 (en) * | 2006-12-12 | 2008-06-12 | Daniel Boire | Antenna tuner with zero volts impedance fold back |
US20080169879A1 (en) * | 2000-07-20 | 2008-07-17 | Cornelis Frederik Du Toit | Tunable microwave devices with auto-adjusting matching circuit |
US20080211598A1 (en) * | 2007-03-01 | 2008-09-04 | Brian Keith Eplett | On-chip impedance matching using a variable capacitor |
US20080261544A1 (en) * | 2007-04-23 | 2008-10-23 | Guillaume Blin | Techniques for improved adaptive impedance matching |
US20100085130A1 (en) * | 2008-10-03 | 2010-04-08 | Toyota Motor Engineering & Manufacturing North America, Inc. | Manufacturable tunable matching network for wire and ribbon bond compensation |
US20100090760A1 (en) * | 2008-10-14 | 2010-04-15 | Paratek Microwave, Inc. | Low-distortion voltage variable capacitor assemblies |
US20100197365A1 (en) * | 2007-06-26 | 2010-08-05 | Skyworks Solutions, Inc. | Error vector magnitude control within a linear transmitter |
US20100308933A1 (en) * | 2009-06-03 | 2010-12-09 | Qualcomm Incorporated | Tunable matching circuits for power amplifiers |
US20100321086A1 (en) * | 2009-06-19 | 2010-12-23 | Qualcomm Incorporated | Power and impedance measurement circuits for a wireless communication device |
US20110018632A1 (en) * | 2009-07-24 | 2011-01-27 | Qualcomm Incorporated | Power amplifier with switched output matching for multi-mode operation |
US20110037519A1 (en) * | 2009-08-14 | 2011-02-17 | Qualcomm Incorporated | Amplifier with variable matching circuit to improve linearity |
US20110043956A1 (en) * | 2009-08-19 | 2011-02-24 | Qualcomm Incorporated | Protection circuit for power amplifier |
EP2290745A1 (en) * | 2009-08-28 | 2011-03-02 | Thomson Licensing | Antenna system comprising an electrically small antenna for reception of UHF band channel signals |
US20110086598A1 (en) * | 2009-10-14 | 2011-04-14 | Research In Motion Limited | Dynamic real-time calibration for antenna matching in a radio frequency receiver system |
US20110086601A1 (en) * | 2009-10-14 | 2011-04-14 | Research In Motion Limited | Dynamic real-time calibration for antenna matching in a radio frequency transmitter system |
US7991363B2 (en) | 2007-11-14 | 2011-08-02 | Paratek Microwave, Inc. | Tuning matching circuits for transmitter and receiver bands as a function of transmitter metrics |
US8072285B2 (en) | 2008-09-24 | 2011-12-06 | Paratek Microwave, Inc. | Methods for tuning an adaptive impedance matching network with a look-up table |
US8150074B1 (en) * | 2008-08-08 | 2012-04-03 | Crestron Electronics Inc. | Impedance matching speaker wire system |
US8213886B2 (en) | 2007-05-07 | 2012-07-03 | Paratek Microwave, Inc. | Hybrid techniques for antenna retuning utilizing transmit and receive power information |
US20120231752A1 (en) * | 2007-03-19 | 2012-09-13 | Razieh Roufoogaran | Method and System for a Configurable Front End |
US8299867B2 (en) | 2006-11-08 | 2012-10-30 | Research In Motion Rf, Inc. | Adaptive impedance matching module |
US20120293249A1 (en) * | 2010-01-26 | 2012-11-22 | Gwangju Institute Of Science And Technology | Power amplifier insensitive to load impedance changes |
US8325097B2 (en) | 2006-01-14 | 2012-12-04 | Research In Motion Rf, Inc. | Adaptively tunable antennas and method of operation therefore |
US8432234B2 (en) | 2010-11-08 | 2013-04-30 | Research In Motion Rf, Inc. | Method and apparatus for tuning antennas in a communication device |
US8472888B2 (en) | 2009-08-25 | 2013-06-25 | Research In Motion Rf, Inc. | Method and apparatus for calibrating a communication device |
US20130231155A1 (en) * | 2010-11-19 | 2013-09-05 | Research In Motion Limited | Dynamic real-time calibration for antenna matching in a radio frequency receiver system |
US8594584B2 (en) | 2011-05-16 | 2013-11-26 | Blackberry Limited | Method and apparatus for tuning a communication device |
US8626083B2 (en) | 2011-05-16 | 2014-01-07 | Blackberry Limited | Method and apparatus for tuning a communication device |
US8655286B2 (en) | 2011-02-25 | 2014-02-18 | Blackberry Limited | Method and apparatus for tuning a communication device |
US8680934B2 (en) | 2006-11-08 | 2014-03-25 | Blackberry Limited | System for establishing communication with a mobile device server |
US8693963B2 (en) | 2000-07-20 | 2014-04-08 | Blackberry Limited | Tunable microwave devices with auto-adjusting matching circuit |
US8712340B2 (en) | 2011-02-18 | 2014-04-29 | Blackberry Limited | Method and apparatus for radio antenna frequency tuning |
US20140141735A1 (en) * | 2011-12-23 | 2014-05-22 | Broadcom Corporation | RF Transmitter Having Broadband Impedance Matching for Multi-Band Application Support |
USRE44998E1 (en) | 2000-07-20 | 2014-07-08 | Blackberry Limited | Optimized thin film capacitors |
US8803631B2 (en) | 2010-03-22 | 2014-08-12 | Blackberry Limited | Method and apparatus for adapting a variable impedance network |
US20140285266A1 (en) * | 2013-03-22 | 2014-09-25 | Kabushiki Kaisha Toshiba | Amplification device and transmitter |
EP2418772A3 (en) * | 2010-08-09 | 2014-10-01 | NTT DoCoMo, Inc. | Variable impedance matching circuit |
US8860526B2 (en) | 2010-04-20 | 2014-10-14 | Blackberry Limited | Method and apparatus for managing interference in a communication device |
US8892060B2 (en) | 2009-01-22 | 2014-11-18 | Mediatek Inc. | Method for tuning a digital compensation filter within a transmitter, and associated digital compensation filter |
US8948889B2 (en) | 2012-06-01 | 2015-02-03 | Blackberry Limited | Methods and apparatus for tuning circuit components of a communication device |
US9000847B2 (en) | 2009-08-19 | 2015-04-07 | Qualcomm Incorporated | Digital tunable inter-stage matching circuit |
US9026062B2 (en) | 2009-10-10 | 2015-05-05 | Blackberry Limited | Method and apparatus for managing operations of a communication device |
US9077426B2 (en) | 2012-10-31 | 2015-07-07 | Blackberry Limited | Adaptive antenna matching via a transceiver-based perturbation technique |
US9246223B2 (en) | 2012-07-17 | 2016-01-26 | Blackberry Limited | Antenna tuning for multiband operation |
US9331723B2 (en) | 2011-11-14 | 2016-05-03 | Blackberry Limited | Perturbation-based dynamic measurement of antenna impedance in real-time |
US9350405B2 (en) | 2012-07-19 | 2016-05-24 | Blackberry Limited | Method and apparatus for antenna tuning and power consumption management in a communication device |
US9362891B2 (en) | 2012-07-26 | 2016-06-07 | Blackberry Limited | Methods and apparatus for tuning a communication device |
US9374113B2 (en) | 2012-12-21 | 2016-06-21 | Blackberry Limited | Method and apparatus for adjusting the timing of radio antenna tuning |
US9406444B2 (en) | 2005-11-14 | 2016-08-02 | Blackberry Limited | Thin film capacitors |
US9413066B2 (en) | 2012-07-19 | 2016-08-09 | Blackberry Limited | Method and apparatus for beam forming and antenna tuning in a communication device |
US9628135B1 (en) | 2016-11-14 | 2017-04-18 | Tekcem | Method for automatically adjusting a tunable matching circuit, and automatic tuning system using this method |
WO2017141086A1 (en) | 2016-02-16 | 2017-08-24 | Tekcem | Method for automatically adjusting a tunable matching circuit, and automatic tuning system using this method |
US9769826B2 (en) | 2011-08-05 | 2017-09-19 | Blackberry Limited | Method and apparatus for band tuning in a communication device |
US20170302316A1 (en) * | 2016-04-14 | 2017-10-19 | Taiwan Semiconductor Manufacturing Co., Ltd. | Ultra-Low-Power RF Receiver Frontend With Tunable Matching Networks |
US9853363B2 (en) | 2012-07-06 | 2017-12-26 | Blackberry Limited | Methods and apparatus to control mutual coupling between antennas |
WO2017221089A1 (en) | 2016-06-22 | 2017-12-28 | Tekcem | Method of automatic adjustment of a tunable impedance matching circuit, and automatic tuning system using this method |
WO2018002745A1 (en) | 2016-06-30 | 2018-01-04 | Tekcem | Method of automatic adjustment of a tunable impedance matching circuit, and automatic tuning system using this method |
US9960491B1 (en) | 2017-04-12 | 2018-05-01 | Tekcem | Method for automatic adjustment of a tunable passive antenna and a tuning unit, and apparatus for radio communication using this method |
US9966930B2 (en) | 2015-08-26 | 2018-05-08 | Samsung Electronics Co., Ltd. | Method for automatically adjusting a tuning unit, and automatic tuning system using this method |
US10003393B2 (en) | 2014-12-16 | 2018-06-19 | Blackberry Limited | Method and apparatus for antenna selection |
US10008777B1 (en) | 2017-04-13 | 2018-06-26 | Tekcem | Method for automatically adjusting a tunable passive antenna and a tuning unit, and apparatus for radio communication using this method |
US10355662B2 (en) | 2016-12-06 | 2019-07-16 | Honeywell International Inc. | Impedance matching using tunable elements |
US10404295B2 (en) | 2012-12-21 | 2019-09-03 | Blackberry Limited | Method and apparatus for adjusting the timing of radio antenna tuning |
US10736050B2 (en) | 2018-07-09 | 2020-08-04 | Honeywell International Inc. | Adjusting transmission power of an antenna based on an object causing path loss in a communication link |
US11533640B2 (en) * | 2019-11-01 | 2022-12-20 | Qualcomm Incorporated | Machine learning-assisted use case classification and adaptive antenna tuning |
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US7113759B2 (en) * | 2002-08-28 | 2006-09-26 | Texas Instruments Incorporated | Controller area network transceiver having capacitive balancing circuit for improved receiver common-mode rejection |
CA2547587C (en) * | 2002-11-27 | 2013-11-19 | Christopher Paul Hancock | Tissue ablating apparatus and method of ablating tissue |
US8339102B2 (en) * | 2004-02-10 | 2012-12-25 | Spansion Israel Ltd | System and method for regulating loading on an integrated circuit power supply |
JP4987723B2 (en) * | 2004-11-19 | 2012-07-25 | エプコス アクチエンゲゼルシャフト | Device with a coupled load line at the output of the amplifier stage |
US7671693B2 (en) * | 2006-02-17 | 2010-03-02 | Samsung Electronics Co., Ltd. | System and method for a tunable impedance matching network |
DE102009018648B4 (en) * | 2009-04-23 | 2018-11-29 | Snaptrack, Inc. | Front end module with antenna tuner |
KR101739283B1 (en) * | 2010-08-31 | 2017-05-25 | 삼성전자주식회사 | Apparatus for adaptive resonant power transmission |
Citations (11)
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US2981902A (en) * | 1958-06-26 | 1961-04-25 | Telecomm Radlioelectriques Et | Automatic impedance matching device |
US3852669A (en) | 1973-06-26 | 1974-12-03 | Us Army | Circuit to protect rf output amplifier against mismatch damage |
US4015223A (en) * | 1975-01-22 | 1977-03-29 | Thomson-Csf | HF Antenna matching device |
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US5140223A (en) * | 1989-07-18 | 1992-08-18 | Leybold Aktiengesellschaft | Circuit for adjusting the impedance of a plasma section to a high-frequency generator |
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-
1997
- 1997-05-27 US US08/863,153 patent/US6414562B1/en not_active Expired - Lifetime
-
2002
- 2002-04-05 US US10/117,621 patent/US20020145483A1/en not_active Abandoned
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2981902A (en) * | 1958-06-26 | 1961-04-25 | Telecomm Radlioelectriques Et | Automatic impedance matching device |
US3852669A (en) | 1973-06-26 | 1974-12-03 | Us Army | Circuit to protect rf output amplifier against mismatch damage |
US4015223A (en) * | 1975-01-22 | 1977-03-29 | Thomson-Csf | HF Antenna matching device |
US4019150A (en) | 1975-11-17 | 1977-04-19 | Motorola, Inc. | PA protection circuit for a single sideband radio |
US4612669A (en) * | 1985-04-30 | 1986-09-16 | Rca Corporation | Antenna matching system |
US5140223A (en) * | 1989-07-18 | 1992-08-18 | Leybold Aktiengesellschaft | Circuit for adjusting the impedance of a plasma section to a high-frequency generator |
US5376895A (en) * | 1991-11-29 | 1994-12-27 | Matsushita Electric Industrial Co., Ltd. | Control circuit and method for transmission output |
US5459440A (en) * | 1993-04-20 | 1995-10-17 | Madge Networks Limited | Automatic impedance matching with potential monitoring means |
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Cited By (201)
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US7714678B2 (en) | 2000-07-20 | 2010-05-11 | Paratek Microwave, Inc. | Tunable microwave devices with auto-adjusting matching circuit |
US9431990B2 (en) | 2000-07-20 | 2016-08-30 | Blackberry Limited | Tunable microwave devices with auto-adjusting matching circuit |
US8896391B2 (en) | 2000-07-20 | 2014-11-25 | Blackberry Limited | Tunable microwave devices with auto-adjusting matching circuit |
US7728693B2 (en) | 2000-07-20 | 2010-06-01 | Paratek Microwave, Inc. | Tunable microwave devices with auto-adjusting matching circuit |
US9948270B2 (en) | 2000-07-20 | 2018-04-17 | Blackberry Limited | Tunable microwave devices with auto-adjusting matching circuit |
US7795990B2 (en) | 2000-07-20 | 2010-09-14 | Paratek Microwave, Inc. | Tunable microwave devices with auto-adjusting matching circuit |
USRE44998E1 (en) | 2000-07-20 | 2014-07-08 | Blackberry Limited | Optimized thin film capacitors |
US20060160501A1 (en) * | 2000-07-20 | 2006-07-20 | Greg Mendolia | Tunable microwave devices with auto-adjusting matching circuit |
US8744384B2 (en) | 2000-07-20 | 2014-06-03 | Blackberry Limited | Tunable microwave devices with auto-adjusting matching circuit |
US20080169880A1 (en) * | 2000-07-20 | 2008-07-17 | Cornelis Frederik Du Toit | Tunable microwave devices with auto-adjusting matching circuit |
US20080169879A1 (en) * | 2000-07-20 | 2008-07-17 | Cornelis Frederik Du Toit | Tunable microwave devices with auto-adjusting matching circuit |
US7865154B2 (en) | 2000-07-20 | 2011-01-04 | Paratek Microwave, Inc. | Tunable microwave devices with auto-adjusting matching circuit |
US9768752B2 (en) | 2000-07-20 | 2017-09-19 | Blackberry Limited | Tunable microwave devices with auto-adjusting matching circuit |
US7969257B2 (en) | 2000-07-20 | 2011-06-28 | Paratek Microwave, Inc. | Tunable microwave devices with auto-adjusting matching circuit |
US8693963B2 (en) | 2000-07-20 | 2014-04-08 | Blackberry Limited | Tunable microwave devices with auto-adjusting matching circuit |
US20030092388A1 (en) * | 2001-11-14 | 2003-05-15 | Koninklijke Philips Electronics N.V. | Impedeance matching circuit for a multi-band radio frequency device |
US6985698B2 (en) * | 2001-11-14 | 2006-01-10 | Koninklijke Philips Electronics N.V. | Impedeance matching circuit for a multi-band radio frequency device |
US6741140B2 (en) * | 2001-12-12 | 2004-05-25 | Nortel Networks Limited | Circuit for receiving an AC coupled broadband signal |
WO2004010595A1 (en) * | 2002-07-20 | 2004-01-29 | Philips Intellectual Property & Standards Gmbh | Device for dynamic impedance matching between a power amplifier and an antenna |
US7145413B2 (en) | 2003-06-10 | 2006-12-05 | International Business Machines Corporation | Programmable impedance matching circuit and method |
US20040251983A1 (en) * | 2003-06-10 | 2004-12-16 | International Business Machines Corporation | Programmable impedance matching circuit and method |
US7264676B2 (en) * | 2003-09-11 | 2007-09-04 | United Microelectronics Corp. | Plasma apparatus and method capable of adaptive impedance matching |
US20050056369A1 (en) * | 2003-09-11 | 2005-03-17 | Chien-Hsin Lai | Plasma apparatus and method capable of adaptive impedance matching |
EP1564896A1 (en) * | 2004-02-10 | 2005-08-17 | Sony Ericsson Mobile Communications AB | Impedance matching for an antenna |
US8330475B2 (en) | 2004-10-06 | 2012-12-11 | Epcos Ag | Circuit for detecting a magnitude and phase of an impedance of a load |
US20080266021A1 (en) * | 2004-10-06 | 2008-10-30 | Koninklijke Philips Electronics N.V. | Impedance Detector |
JP4828542B2 (en) * | 2004-10-06 | 2011-11-30 | エプコス アクチエンゲゼルシャフト | Impedance detector |
JP2008516508A (en) * | 2004-10-06 | 2008-05-15 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Impedance detector |
US20070035356A1 (en) * | 2005-08-15 | 2007-02-15 | Nokia Corporation | Integrated load impedance sensing for tunable matching networks |
US7586384B2 (en) | 2005-08-15 | 2009-09-08 | Nokia Corporation | Integrated load impedance sensing for tunable matching networks |
WO2007020324A1 (en) * | 2005-08-15 | 2007-02-22 | Nokia Corporation | Integrated load impedance sensing for tunable matching networks |
US10163574B2 (en) | 2005-11-14 | 2018-12-25 | Blackberry Limited | Thin films capacitors |
US9406444B2 (en) | 2005-11-14 | 2016-08-02 | Blackberry Limited | Thin film capacitors |
US8125399B2 (en) | 2006-01-14 | 2012-02-28 | Paratek Microwave, Inc. | Adaptively tunable antennas incorporating an external probe to monitor radiated power |
US8269683B2 (en) | 2006-01-14 | 2012-09-18 | Research In Motion Rf, Inc. | Adaptively tunable antennas and method of operation therefore |
US8463218B2 (en) | 2006-01-14 | 2013-06-11 | Research In Motion Rf, Inc. | Adaptive matching network |
US8942657B2 (en) | 2006-01-14 | 2015-01-27 | Blackberry Limited | Adaptive matching network |
US20100156552A1 (en) * | 2006-01-14 | 2010-06-24 | Paratek Microwave, Inc. | Adaptive matching network |
US20100085260A1 (en) * | 2006-01-14 | 2010-04-08 | Mckinzie William E | Adaptively tunable antennas and method of operation therefore |
US20070197180A1 (en) * | 2006-01-14 | 2007-08-23 | Mckinzie William E Iii | Adaptive impedance matching module (AIMM) control architectures |
US8620246B2 (en) | 2006-01-14 | 2013-12-31 | Blackberry Limited | Adaptive impedance matching module (AIMM) control architectures |
US10177731B2 (en) | 2006-01-14 | 2019-01-08 | Blackberry Limited | Adaptive matching network |
US9853622B2 (en) | 2006-01-14 | 2017-12-26 | Blackberry Limited | Adaptive matching network |
US20070285326A1 (en) * | 2006-01-14 | 2007-12-13 | Mckinzie William E | Adaptively tunable antennas incorporating an external probe to monitor radiated power |
US8620247B2 (en) | 2006-01-14 | 2013-12-31 | Blackberry Limited | Adaptive impedance matching module (AIMM) control architectures |
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